Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cbbd5988cf496e8…

MALICIOUS

PDF

99.4 KB
MD5: be28c7b9902067872b9c2a606012bf7f SHA-1: 604d5c20d887a1814597c411d9e9fb87e7dbf270 SHA-256: 0cbbd5988cf496e8ab037dbe91e9d1dc97bdc9c29a2bf4832b0951a7d13d657c
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious, with critical heuristics indicating exploitation of CVE-2010-0188 in Adobe Reader via XFA forms. This vulnerability allows for arbitrary code execution, which is likely used to download and run a secondary payload. No specific malware family was identified.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
90c369a39d29003d0a907c5a1e83c6125e58652d07ffa3b18c37c41ef0c8b37d
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101086 bytes